1102011121221 has 16 divisors (see below), whose sum is σ = 1483318339584. Its totient is φ = 727707746304.

The previous prime is 1102011121193. The next prime is 1102011121229. The reversal of 1102011121221 is 1221211102011.

It is a happy number.

It is not a de Polignac number, because 1102011121221 - 2⁹ = 1102011120709 is a prime.

It is a super-2 number, since 2×1102011121221² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1102011121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102011121229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2108860 + ... + 2579013.

It is an arithmetic number, because the mean of its divisors is an integer number (92707396224).

Almost surely, 2^{1102011121221} is an apocalyptic number.

It is an amenable number.

1102011121221 is a deficient number, since it is larger than the sum of its proper divisors (381307218363).

1102011121221 is a wasteful number, since it uses less digits than its factorization.

1102011121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688620.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1102011121221 its reverse (1221211102011), we get a palindrome (2323222223232).

The spelling of 1102011121221 in words is "one trillion, one hundred two billion, eleven million, one hundred twenty-one thousand, two hundred twenty-one".